<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <!-- import CSS -->
    <link rel="stylesheet" href="https://cdn.staticfile.org/element-ui/2.15.9/theme-chalk/index.css">
    <style>

    </style>
</head>
<body>
<div id="app">
    <el-page-header
            style="background-color: #0095d7;color: white;
                    line-height: 60px"
            @back="goBack" content="修改商品">
    </el-page-header>
        <!--创建一个card组件里面添加一个表单组件-->
        <el-card style="width: 600px;height: 800px;margin:0 auto">
            <el-form label-width="80px">
                <el-form-item label="商品标题">
                    <el-input v-model="p.title" type="text" ></el-input>
                </el-form-item>
                <el-form-item label="商品价格">
                    <el-input v-model="p.price" type="text" ></el-input>
                </el-form-item>
                <el-form-item label="商品原价">
                    <el-input v-model="p.oldPrice" type="text" ></el-input>
                </el-form-item>
                <el-form-item label="商品销量">
                    <el-input v-model="p.saleCount" type="text" ></el-input>
                </el-form-item>
                <el-form-item label="商品库存">
                    <el-input v-model="p.num" type="text" ></el-input>
                </el-form-item>
                <el-form-item label="商品分类">
                    <!--label是显示的内容 value是选中后提交的值-->
                    <el-select v-model="p.categoryId">
                        <el-option v-for="c in arr"
                                   :label="c.name" :value="c.id"></el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="商品图片">
                    <img :src="oldUrl" width="100" alt="">
                    <el-upload
                            action="/upload"
                            name="pic"
                            limit="1"
                            list-type="picture-card"
                            :on-success="handleSuccess"
                            :on-preview="handlePictureCardPreview"
                            :on-remove="handleRemove">
                        <i class="el-icon-plus"></i>
                    </el-upload>
                    <el-dialog :visible.sync="dialogVisible">
                        <img width="100%" :src="dialogImageUrl" alt="">
                    </el-dialog>
                </el-form-item>
                <el-form-item>
                    <el-button type="success" @click="update()">修改商品</el-button>
                </el-form-item>
            </el-form>
        </el-card>



</div>
</body>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<!-- import Vue before Element -->
<script src="https://cdn.staticfile.org/vue/2.6.14/vue.min.js"></script>
<!-- import JavaScript -->
<script src="https://cdn.staticfile.org/element-ui/2.15.9/index.min.js"></script>
<script>
    let v = new Vue({
        el: '#app',
        data: function () {
            return {
                dialogImageUrl: '',
                dialogVisible: false,
                p:{
                    title:"",
                    url:"",
                    price:"",
                    oldPrice:"",
                    saleCount:"",
                    num:"",
                    categoryId:""
                },
                arr:[],
                oldUrl:""
            }
        },
        methods: {
            goBack(){
                history.back();//返回上一页面
            },
            handleRemove(file, fileList) {
                console.log(file, fileList);

                axios.get("/remove?url="+v.p.url).then(function(response){
                    v.$message("删除成功!");
                    //删除后url 应该清空  代表没有选择上传的图片
                    v.p.url="";
                })
            },
            handlePictureCardPreview(file) {
                this.dialogImageUrl = file.url;
                this.dialogVisible = true;
            },
            handleSuccess(response,file,fileList){
                //file.response得到服务器上传成功后相应的图片路径
                v.p.url=file.response;
            },
            update(){
                if (v.p.url==""){
                    v.$message("请选择上传的图片!");
                    return;
                }
                //发出修改商品的请求
                axios.post("/product/update",v.p).then(function (response) {
                    location.href="/admin.html";
                })
            }
        },
        created:function () {
            //发请求获取分类数据
            axios.get("/category/select").then(function (response) {
                v.arr = response.data;
            })
            //通过商品id查询详情
            axios.get("/product/selectForUpdateById"+location.search)
                .then(function (response) {
                v.p = response.data;
                //显示原图片
                v.oldUrl = v.p.url;
            })

        }
    })
</script>
</html>